{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT8631IFE#TRPBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT8631IFE~4TRPBF","canonicalUrl":"https://icboms.com/analog-devices/LT8631IFE~4TRPBF","factsUrl":"https://icboms.com/api/mcp/products/LT8631IFE%23TRPBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT8631IFE#TRPBF step-down buck regulator, 1 A output, 3 V to 100 V input, adjustable 0.8 V to 60 V output, synchronous rectification, 20-TSSOP exposed pad, tape and reel.","salesMarkdown":"## Wide-input buck for industrial rails The LT8631IFE#TRPBF is a step-down (buck) switching regulator from Analog Devices, delivering 1 A continuous output from a 3 V to 100 V input range — the 100 V maximum covers 48 V telecom rails, 72 V industrial buses, and 12 V/24 V automotive systems with headroom for transients. Output is adjustable from 0.8 V up to 60 V, positive polarity, with a single feedback resistor divider. The synchronous rectifier eliminates the external catch diode, saving board area and improving efficiency at light loads. Switching frequency is programmable from 100 kHz to 1 MHz via a resistor on the RT pin, letting the designer trade off inductor size against switching losses. ## Package and board-fit for the TSSOP-EP The supplier device package is 20-TSSOP-EP; the tape-and-reel format (TR) suits automated pick-and-place, while the cut-tape (CT) option is available for prototypes. The part is ROHS3 compliant, no exemptions. ## Active lifecycle and compliance posture For new designs, the wide input range and 1 A output cover a broad set of point-of-load rails. The closest peer in the same family is the LT8631HFE#PBF, which shares the same die and pinout but is packaged in a tube (not tape-and-reel) and is rated for a 150°C junction temperature — the H-grade variant for higher ambient environments. Both are active; the HFE variant is the better choice if the board sees sustained junction temperatures above 125°C.","metaTitle":"Analog Devices LT8631IFE#TRPBF Buck Converter, 1A","metaDescription":"LT8631IFE#TRPBF step-down regulator from Analog Devices. 3V to 100V input, 1A output, adjustable 0.8V to 60V. Active, ROHS3. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Step-Down","Topology":"Buck","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"20-TSSOP (0.173\\\", 4.40mm Width), 16 Leads, Exposed Pad","lifecycle_stage":"eol_hot","Current - Output":"1A","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"100kHz ~ 1MHz","Operating Temperature":"-40°C ~ 125°C (TJ)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"100V","Voltage - Input (Min)":"3V","Voltage - Output (Max)":"60V","Supplier Device Package":"20-TSSOP-EP","Voltage - Output (Min/Fixed)":"0.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.93","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$11.93000","currency":"USD"},{"qty":10,"price":"$10.78000","currency":"USD"},{"qty":25,"price":"$10.27840","currency":"USD"},{"qty":100,"price":"$8.92460","currency":"USD"},{"qty":250,"price":"$8.52344","currency":"USD"},{"qty":500,"price":"$7.77140","currency":"USD"},{"qty":1000,"price":"$7.09500","currency":"USD"},{"qty":2500,"price":"$7.09500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4b18c59db20289144f1de21ebbd3a83d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between LT8631IFE#TRPBF and LT8631HFE#PBF?","answer":"Both parts share the same buck regulator die, pinout, and 20-TSSOP-EP package. The IFE ships in tape-and-reel; the HFE ships in a tube. If your board sees sustained junction temperatures above 125°C, the HFE variant is the correct choice. For most industrial applications below 125°C, the IFE is functionally identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT8631IFE~4TRPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT8631IFE~4TRPBF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}